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Chemistry, 28.07.2019 10:00 epelmanr

Sally is making a model of gold for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 70 protons to her model so far. how many more protons does she need to add to complete her neutral atom of gold?

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Sally is making a model of gold for her chemistry class. she has foam balls for the protons, neutron...
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